Fireclass FC460H is the heat sensor which can operate in fixed temperature and rate-of-rise modes. It is most often used in areas where high levels of dust are present or where the environment precludes the use of smoke detectors. FireClass FC460 detectors provide the best in class environmental and detection performance with the capability of detecting all fire types. The Range includes an Optical/Heat Multisensor and Optical/Heat/CO Triple Multisensor. Automatic self testing of each sensor element offers reassurance of operation at all times and the 360º alarm, isolated and fault LED on each detector provides instant line of sight. Fourteen EN54 approved modes/sensitivities for the Optical/Heat Multisensor help to provide one of the best and most versatile detectors on the market.